html,body {
    height: 100%;
}
.main {
    height: 100%;
}
.main .top-box {
    text-align: center;
    font-size: 20px;
    height: 68px;
    line-height: 70px;
    /* border-bottom: 2px solid #ff0000; */
    background-color: rgb(26,43,86);
    position: relative;
    padding-left: 20px;
}
div {
    font-weight: bold;
    color: #383838
}
.main .top-box span {
    font-weight: 600;
    color: white
}
.main .top-box .logout-btn {
    /* border: 1px solid #000; */
    height: 40px;
    line-height: 40px;
    padding: 0 10px;
    border-radius: 10px;
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 20px;
    font-family:'游ゴシック', YuGothic, 'ヒラギノ角ゴ Pro', 'Hiragino Kaku Gothic Pro', 'メイリオ', Meiryo, 'sans-serif';
    font-size: 14px;
    margin: 0px;
    color: #fff;
}
.main .nav {
    float: left;
    height: 100vh;
    /* height: calc( 100% - 81px ); */
    width: 25%;
    border-right: 1px solid #999999;
    background: linear-gradient(to bottom, #ffffff, #999999);
    overflow:hidden
}
.main .nav .hide {
    display: none;
}
.main .nav .item,
.main .nav .item1,
.main .nav .item2 {
    position: relative;
    line-height: 60px;
    border-bottom: 1px solid #999999;
    cursor: pointer;
    white-space: nowrap;
    text-overflow: ellipsis;
    /* overflow: hidden; */
    word-break: break-all;
}
.main .nav .item {
    padding: 0 10px;
    font-size: 16px;
}
.main .nav .item1 {
    padding: 0 20px;
    font-size: 14px;
}
.main .nav .item2 {
    padding: 0 30px;
    font-size: 12px;
}
.main .nav .choose {
    background-color: #5b9bd5;
}
.main .nav .hide .choose {
    background-color: #fff;
}
.main .nav .active::after {
    content: '';
    width: 0;
    height: 0;
    position: absolute;
    border-right: 10px solid transparent;
    border-left: 10px solid transparent;
    border-bottom: 10px solid #d8d8d8;
    right: 20px;
    top: 20px;
}
.main .nav .no-act::after {
    content: '';
    width: 0;
    height: 0;
    position: absolute;
    border-right: 10px solid transparent;
    border-left: 10px solid transparent;
    border-top: 10px solid #d8d8d8;
    right: 20px;
    top: 20px;
}
.main .content {
    position: relative;
    text-align:left;
    float: right; 
    width: calc( 75% - 5px);
    padding-top: 20px;
    height: 160vh;
    background-color: rgb(243, 243, 243);
    overflow-y: visible;
}
.main .content iframe {
    width: 100%;
    height: 100%;
}



.main .nav2 {
    float: left;
    height: 160vh;
    /* height: calc( 100% - 81px ); */
    width: 25%;
    border-right: 1px solid #999999;
    /* background: linear-gradient(to bottom, #ffffff, #999999); */
    background: rgb(26,43,86);
}
.main .nav2 .hide {
    display: none;
}
.main .nav2 .item,
.main .nav2 .item1,
.main .nav2 .item2 {
    position: relative;
    line-height: 60px;
    border-bottom: 1px solid #999999;
    cursor: pointer;
    white-space: nowrap;
    text-overflow: ellipsis;
    /* overflow: hidden; */
    word-break: break-all;
    background-color: #fff;
    height: 55px;
}
.main .nav2 .item {
    padding: 0 10px;
    font-size: 16px;
}
.main .nav2 .item1 {
    padding: 0 20px;
    font-size: 14px;
}
.main .nav2 .item2 {
    padding: 0 35px;
    font-size: 12px;
}
.main .nav2 .choose {
    background-color: #5b9bd5;
}
.main .nav2 .hide .choose {
    background-color: #fff;
}
.main .nav2 .active::after {
    content: '';
    width: 0;
    height: 0;
    position: absolute;
    border-right: 8px solid transparent;
    border-left: 8px solid transparent;
    border-bottom: 8px solid rgb(26,43,86);
    right: 20px;
    top: 20px;
}
.main .nav2 .no-act::after {
    content: '';
    width: 0;
    height: 0;
    position: absolute;
    border-right: 8px solid transparent;
    border-left: 8px solid transparent;
    border-top: 8px solid rgb(26,43,86);
    right: 20px;
    top: 20px;
}